/**
 * @license  Highcharts JS v6.1.2 (2018-08-31)
 *
 * Indicator series type for Highstock
 *
 * (c) 2010-2017 Paweł Fus
 *
 * License: www.highcharts.com/license
 */
'use strict';
(function (factory) {
	if (typeof module === 'object' && module.exports) {
		module.exports = factory;
	} else if (typeof define === 'function' && define.amd) {
		define(function () {
			return factory;
		});
	} else {
		factory(Highcharts);
	}
}(function (Highcharts) {
	(function (H) {


		var each = H.each,
		    defined = H.defined,
		    isArray = H.isArray,
		    SMA = H.seriesTypes.sma;

		function destroyExtraLabels(point, functionName) {
		    var props = point.series.pointArrayMap,
		        prop,
		        i = props.length;

		    SMA.prototype.pointClass.prototype[functionName].call(point);

		    while (i--) {
		        prop = 'dataLabel' + props[i];
		        // S4 dataLabel could be removed by parent method:
		        if (point[prop] && point[prop].element) {
		            point[prop].destroy();
		        }
		        point[prop] = null;
		    }
		}

		H.seriesType('pivotpoints', 'sma',
		    /**
		     * Pivot points indicator. This series requires the `linkedTo` option to be
		     * set and should be loaded after `stock/indicators/indicators.js` file.
		     *
		     * @extends plotOptions.sma
		     * @product highstock
		     * @sample {highstock} stock/indicators/pivot-points
		     *                     Pivot points
		     * @since 6.0.0
		     * @optionparent plotOptions.pivotpoints
		     */
		    {
		        /**
		         * @excluding index
		         */
		        params: {
		            period: 28,
		            /**
		             * Algorithm used to calculate ressistance and support lines based
		             * on pivot points. Implemented algorithms: `'standard'`,
		             * `'fibonacci'` and `'camarilla'`
		             *
		             * @type {String}
		             * @since 6.0.0
		             * @product highstock
		             */
		            algorithm: 'standard'
		        },
		        marker: {
		            enabled: false
		        },
		        enableMouseTracking: false,
		        dataLabels: {
		            enabled: true,
		            format: '{point.pivotLine}'
		        },
		        dataGrouping: {
		            approximation: 'averages'
		        }
		    }, {
		        nameBase: 'Pivot Points',
		        pointArrayMap: ['R4', 'R3', 'R2', 'R1', 'P', 'S1', 'S2', 'S3', 'S4'],
		        pointValKey: 'P',
		        toYData: function (point) {
		            return [point.P]; // The rest should not affect extremes
		        },
		        translate: function () {
		            var indicator = this;

		            SMA.prototype.translate.apply(indicator);

		            each(indicator.points, function (point) {
		                each(indicator.pointArrayMap, function (value) {
		                    if (defined(point[value])) {
		                        point['plot' + value] = indicator.yAxis.toPixels(
		                            point[value],
		                            true
		                        );
		                    }
		                });
		            });

		            // Pivot points are rendered as horizontal lines
		            // And last point start not from the next one (as it's the last one)
		            // But from the approximated last position in a given range
		            indicator.plotEndPoint = indicator.xAxis.toPixels(
		                indicator.endPoint,
		                true
		            );
		        },
		        getGraphPath: function (points) {
		            var indicator = this,
		                pointsLength = points.length,
		                allPivotPoints = [[], [], [], [], [], [], [], [], []],
		                path = [],
		                endPoint = indicator.plotEndPoint,
		                pointArrayMapLength = indicator.pointArrayMap.length,
		                position,
		                point,
		                i;

		            while (pointsLength--) {
		                point = points[pointsLength];
		                for (i = 0; i < pointArrayMapLength; i++) {
		                    position = indicator.pointArrayMap[i];

		                    if (defined(point[position])) {
		                        allPivotPoints[i].push({
		                            // Start left:
		                            plotX: point.plotX,
		                            plotY: point['plot' + position],
		                            isNull: false
		                        }, {
		                            // Go to right:
		                            plotX: endPoint,
		                            plotY: point['plot' + position],
		                            isNull: false
		                        }, {
		                            // And add null points in path to generate breaks:
		                            plotX: endPoint,
		                            plotY: null,
		                            isNull: true
		                        });
		                    }
		                }
		                endPoint = point.plotX;
		            }

		            each(allPivotPoints, function (pivotPoints) {
		                path = path.concat(
		                    SMA.prototype.getGraphPath.call(indicator, pivotPoints)
		                );
		            });

		            return path;
		        },
		        drawDataLabels: function () {
		            var indicator = this,
		                pointMapping = indicator.pointArrayMap,
		                currentLabel,
		                pointsLength,
		                point,
		                i;

		            if (indicator.options.dataLabels.enabled) {
		                pointsLength = indicator.points.length;

		                // For every Ressitance/Support group we need to render labels.
		                // Add one more item, which will just store dataLabels from
		                // previous iteration
		                each(pointMapping.concat([false]), function (position, k) {
		                    i = pointsLength;
		                    while (i--) {
		                        point = indicator.points[i];

		                        if (!position) {
		                            // Store S4 dataLabel too:
		                            point['dataLabel' + pointMapping[k - 1]] =
		                                point.dataLabel;
		                        } else {
		                            point.y = point[position];
		                            point.pivotLine = position;
		                            point.plotY = point['plot' + position];
		                            currentLabel = point['dataLabel' + position];

		                            // Store previous label
		                            if (k) {
		                                point['dataLabel' + pointMapping[k - 1]] =
		                                    point.dataLabel;
		                            }

		                            point.dataLabel = currentLabel =
		                                currentLabel && currentLabel.element ?
		                                    currentLabel :
		                                    null;
		                        }
		                    }
		                    SMA.prototype.drawDataLabels.apply(indicator, arguments);
		                });
		            }
		        },
		        getValues: function (series, params) {
		            var period = params.period,
		                xVal = series.xData,
		                yVal = series.yData,
		                yValLen = yVal ? yVal.length : 0,
		                placement = this[params.algorithm + 'Placement'],
		                PP = [], // 0- from, 1- to, 2- R1, 3- R2, 4- pivot, 5- S1 etc.
		                endTimestamp,
		                xData = [],
		                yData = [],
		                slicedXLen,
		                slicedX,
		                slicedY,
		                lastPP,
		                pivot,
		                avg,
		                i;

		            // Pivot Points requires high, low and close values
		            if (
		                xVal.length < period ||
		                !isArray(yVal[0]) ||
		                yVal[0].length !== 4
		            ) {
		                return false;
		            }

		            for (i = period + 1; i <= yValLen + period; i += period) {
		                slicedX = xVal.slice(i - period - 1, i);
		                slicedY = yVal.slice(i - period - 1, i);

		                slicedXLen = slicedX.length;

		                endTimestamp = slicedX[slicedXLen - 1];

		                pivot = this.getPivotAndHLC(slicedY);
		                avg = placement(pivot);

		                lastPP = PP.push(
		                    [endTimestamp]
		                    .concat(avg)
		                );

		                xData.push(endTimestamp);
		                yData.push(PP[lastPP - 1].slice(1));
		            }

		            // We don't know exact position in ordinal axis
		            // So we use simple logic:
		            // Get first point in last range, calculate visible average range
		            // and multiply by period
		            this.endPoint = slicedX[0] +
		                ((endTimestamp - slicedX[0]) / slicedXLen) * period;

		            return {
		                values: PP,
		                xData: xData,
		                yData: yData
		            };
		        },
		        getPivotAndHLC: function (values) {
		            var high = -Infinity,
		                low = Infinity,
		                close = values[values.length - 1][3],
		                pivot;
		            each(values, function (p) {
		                high = Math.max(high, p[1]);
		                low = Math.min(low, p[2]);
		            });
		            pivot = (high + low + close) / 3;

		            return [pivot, high, low, close];
		        },
		        standardPlacement: function (values) {
		            var diff = values[1] - values[2],
		                avg = [
		                    null,
		                    null,
		                    values[0] + diff,
		                    values[0] * 2 - values[2],
		                    values[0],
		                    values[0] * 2 - values[1],
		                    values[0] - diff,
		                    null,
		                    null
		                ];

		            return avg;
		        },
		        camarillaPlacement: function (values) {
		            var diff = values[1] - values[2],
		                avg = [
		                    values[3] + diff * 1.5,
		                    values[3] + diff * 1.25,
		                    values[3] + diff * 1.1666,
		                    values[3] + diff * 1.0833,
		                    values[0],
		                    values[3] - diff * 1.0833,
		                    values[3] - diff * 1.1666,
		                    values[3] - diff * 1.25,
		                    values[3] - diff * 1.5
		                ];

		            return avg;
		        },
		        fibonacciPlacement: function (values) {
		            var diff = values[1] - values[2],
		                avg = [
		                    null,
		                    values[0] + diff,
		                    values[0] + diff * 0.618,
		                    values[0] + diff * 0.382,
		                    values[0],
		                    values[0] - diff * 0.382,
		                    values[0] - diff * 0.618,
		                    values[0] - diff,
		                    null
		                ];

		            return avg;
		        }
		    }, {
		        // Destroy labels:
		        // This method is called when cropping data:
		        destroyElements: function () {
		            destroyExtraLabels(this, 'destroyElements');
		        },
		        // This method is called when removing points, e.g. series.update()
		        destroy: function () {
		            destroyExtraLabels(this, 'destroyElements');
		        }
		    }
		);

		/**
		 * A pivot points indicator. If the [type](#series.pivotpoints.type) option is
		 * not specified, it is inherited from [chart.type](#chart.type).
		 *
		 * @type {Object}
		 * @since 6.0.0
		 * @extends series,plotOptions.pivotpoints
		 * @excluding data,dataParser,dataURL
		 * @product highstock
		 * @apioption series.pivotpoints
		 */

		/**
		 * An array of data points for the series. For the `pivotpoints` series type,
		 * points are calculated dynamically.
		 *
		 * @type {Array<Object|Array>}
		 * @since 6.0.0
		 * @extends series.line.data
		 * @product highstock
		 * @apioption series.pivotpoints.data
		 */

	}(Highcharts));
	return (function () {


	}());
}));
